Finding the Fourth Proportional to 23,253.69, 32,091.40 and 12,643.09

Step by Step Solution

1. Step 1: Write the proportion equation
   23,253.69 : 32,091.40 = 12,643.09 : x
2. Step 2: Convert to fraction form
   23,253.69/32,091.40 = 12,643.09/x
3. Step 3: Cross multiply
   23,253.69x = 32,091.40 × 12,643.09
4. Step 4: Simplify right side
   23,253.69x = 405,734,458.43
5. Step 5: Solve for x
   x = 405,734,458.43/23,253.69
6. Step 6: Final answer
   x = 17,448.18